Post-translational modification of ribosomally synthesized peptides by a radical SAM epimerase in Bacillus subtilis.
Post-translational modification of ribosomally synthesized peptides by a radical SAM epimerase in Bacillus subtilis.
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通过枯草芽孢杆菌中的自由基SAM分配酶对核糖体合成的肽的翻译后修饰。
DOI:
10.1038/nchem.2714
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发表时间:
2017-07
期刊:
影响因子:
21.8
通讯作者:
Berteau O
中科院分区:
文献类型:
--
作者:
Benjdia A;Guillot A;Ruffié P;Leprince J;Berteau O
Ribosomally-synthesized peptides are built out of l-amino acids while d-amino acids are generally the hallmark of nonribosomal synthetic processes. Here we show that the model bacterium Bacillus subtilis is able to produce a novel type of ribosomally synthesized and post-translationally modified peptide containing d-amino acids that we propose to call epipeptides. We demonstrate that a two [4Fe-4S] clusters radical SAM enzyme converts l-amino acids into their d-counterparts by catalyzing Cα H-atom abstraction and using a critical cysteine residue as H-atom donor. Unexpectedly, these d-amino acid residues proved to be essential for the bioactivity of a peptide inducing the expression of LiaRS, a major component of the bacterial cell envelope stress response system. Present in B. subtilis and in several members of the human microbiome, these epipeptides and radical SAM epimerases broaden the landscape of peptidyl structures accessible to living organisms.
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DOI:
10.1016/j.bbapap.2015.04.015
发表时间:
2015-08
影响因子:
3.2
作者:
Gerlt, John A.;Bouvier, Jason T.;Davidson, Daniel B.;Imker, Heidi J.;Sadkhin, Boris;Slater, David R.;Whalen, Katie L.
通讯作者:
Whalen, Katie L.
影响因子:
14.8
作者:
Fluehe, Eif;Knappe, Thomas A.;Marahiel, Mohamed A.
通讯作者:
Marahiel, Mohamed A.
影响因子:
56.9
作者:
Dai, SD;Schwendtmayer, C;Eklund, H
通讯作者:
Eklund, H
影响因子:
6.8
作者:
Benjdia, Alhosna
通讯作者:
Benjdia, Alhosna
影响因子:
15
作者:
Benjdia, Alhosna;Leprince, Jerome;Berteau, Olivier
通讯作者:
Berteau, Olivier